Ischnacanthiformes
Extinct order of cartilaginous fishes
From Wikipedia, the free encyclopedia
Ischnacanthiformes is a prehistoric order of "acanthodian" stem-chondrichthyans found in Canada, Ukraine and United Kingdom. Members of this order were nektonic carnivores,[1] eating animals that swim rather than plankton. They had slender builds, light armor, deeply inserted spines, shark-like teeth, and two dorsal fins.[1] Some species were around 2 meters (6.56 feet) long.[2] It was described by Berg in 1940.[3][4]
| Ischnacanthiformes Temporal range: | |
|---|---|
| |
| Nerepisacanthus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | †Acanthodii |
| Order: | †Ischnacanthiformes |
| Families | |
| |
